germans



Patented Nov. 12, 1889.

(No Mode'l.)

J. M. GERMANN.

SPOKE DRAWER.

Mn.) BY MW ATTORNEYS.

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JOHN M. GERMANN, OF NE\V YORK, N. Y.

SPOKE-DRAWER.

SPECIFICATION forming part of Letters Patent No. 414,902, dated November 12, 1889.

Application filed October 26 1888. Serial No. 289,179. (No model.)

To aZZ whom it may concern.-

Be it known that I, JOHN M. GERMANN, of the city, county, and State of New York, have invented a new and Improved Spoke-Drawer, of which the following is a full, clear, and exact description.

My invention relates to a machine for drawing broken or damaged spokes from the hubs of wheels while repairing them, this device being more especially adapted for drawing the spokes of heavy wheels; and the invention has for its object to provide a simple, inexpensive, and efficient machine of this character.

The invention will first be described, and

y then will be particularly pointed out in the claim.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a face view of a heavy vehiclewheel, with part of its felly removed and with my improved spoke-drawer applied for removing a broken spoke from the wheel-hub, the foot-plate of one of the screws of the machine being shown in vertical section. Fig. 2 is a transverse vertical sectional elevation of the spoke-drawer and wheel, and Fig. 3 is a plan View of the spoke-clamp of the machine.

The drawings represent the spoke-drawer applied to a heavy truck-wheel of the Sar- Ven pattern, to illustrate the special adaptation of the machine for drawing the spokes of heavy wheels; but it is obvious that the machine is also adapted for drawingthe spokes of medium-weight or light wheels.

The spoke-drawer has Very few and simple parts, comprising a couple of screws A A, preferably having heavy square threads and fitted to opposite threaded eyes of a spokeclamp B, and having foot or presser plates 0 Q, adapted to bear upon the hub dof a wheel D, from which one or more damaged spokes d are to be withdrawn. The clamp B consists of a couple of plates b I), provided with central opposing concaved faces, which grip the spoke when screw-bolts b fitted in the plates, are tightened after the plates are placed at opposite sides of the spoke. The extremities of the clamp-plate b are formed as eyes a a, which form the nuts into which the screws A A are fitted, and the screws have squared and shouldered outer ends or heads, permitting easy application of a wrench for turning them. The screw foot-plates O O are curved to fit upon the hub of the wheel and are swiveled to reduced ends 0 c of the screws, which provide bearing-shoulders which take the thrust of the screws, while their reduced ends turn in the foot-plates resting on the hub.

It is obvious, when the screws A A are properly adjusted endwise in the clamp eyes or nuts or a, and the foot-plates are rested on the wheel-hub d, and the clamp is bolted to the spoke, as above described, that by applying a suitable wrench or tool to the screws A A and turning them alternately in the clamp the resistance of the screws on the wheel-hub will cause the spoke d to be quickly, easily, and safely withdrawn from the hub and without tearing out or splitting off the hub at the mortise for the spoke, or enlarging the mortise to cause the new spoke to fit loosely in the hub, as would be liable to occur were the spoke unduly canted over to one side while being drawn out by other devices. Furthermore, in using my machine the spoke need be clamped but once to assure its easy and quick withdrawal by alternatelyrotating the screws and without injury to the hub of the wheel, and with economy of time andlabor.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

The combination, in a spok -drawer, of a spoke-clamp B, comprising plates 1) 1), adapted to opposite faces of a spoke, and bolts 12 6 for clamping the plates to the spokes, a pair of screws A A, threaded into eyes a a on the clamp, and foot-plates O O, swiveled to the screws and adapted to a wheel-hub, all arranged for operation substantially as herein set forth.

JOHN M. GERMANN.

WVitnesses:

HENRY L. GQODWIN, C. SEDGWIOK. 

